HP ProBook 4520s :: Won't Power Up?
Jul 22, 2011
My HP probook was working fine till this morning it just turned itself off and now wont power up at all no lights etc. I then tried another battery I had and when plugged in the orange light will now show to say charging with this battery unlike my other one but still no power or anything, keep pressing and holding the power button but nothing happens?
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Aug 26, 2014
I cant remember my BIOS Password and want to update my BIOS to 2014 version. I was asked for the password I can't remember it.
My Product details:
HP ProBook 4520s Notebook PC
Serial Number:Â Â 2CE0410Z72
Product Number:Â Â XN670ES
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Oct 15, 2014
HP probook 4330s
Windows  7  Ultimate + service pack 1  64bit
Driver: RALINK microsoft driver 3.0.0.41 Â Â (up to date when i do a search)
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When I remove the ac power external internet is lost.  The wireless connection still appears to be up but there is no traffic. I cannot  ping anything when this occurs.
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The only  way to get this  up and  running  again is toÂ
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1. insert ac power
2. restart  the dhcp client service (sometimes have to do this more than once).  The service hasn't stopped, but for some reason this gets it up and  running.
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I have also tried  disabling the  "allow computer to turn off this device to save power".  But this did not work....
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Oct 27, 2011
Laptop: Hp ProBook 4510s
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When I turn my laptop on, the blue light on the power on button lights for 6 seconds, meanwhile the led near the power plug on right side rapidly blinks 13 times. Always exactly 13 times, so it must be some kind of error code. Then laptop shuts down. Nothing is heard, neither fan, neither hard disk.
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May 31, 2013
Suddenly I am unable to  create wifi hotspot by command prompt in windows 8.1. because  every time I am facingÂ
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"the wireless local area network interface is power down and doesn't support the requested operation"
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I am using HP probook 4440s.
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Apr 16, 2013
I have a Dell Latitude D800 that will not power on. When the power button is pushed the green power indicator light comes on, the CDROM spins for a moment, but then nothing happens, there is no BIOS information displayed, no power on self test, no Dell logo. It just sits there with the green power light on.I have tried removing the power & battery then pressing the power button for 10 seconds (actually, I have tried as long as 60 seconds). I have tried to turn on with the power connected but not the battery. I have tried removing the connector cable for the power button and the connector cable for the display and then reseating them.
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Nov 26, 2011
I have a Dell Inspiron N5010 laptop, the power light (light on the power button) and the left front LED white light blinks every 5 seconds. Â It doesn't power on at all.
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Oct 23, 2013
I have just installed an i7 2670Qm on my T420 today.The machine will crash pretty soon after booting up, with the screen having colorful vertical and horizontal lines before it restarts itself and give the memory error beeping pattern (1 beep-pause-3 beeps-3 beeps-pause-1 beep).So then I took out one RAM from the bottom, and the machine appears to work normally again, more or less.
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In the OS (Win7 64), The power manager alerts me that the 65w AC adapter is giving not enough power, so the laptop is running on battery. I thought I just need a 90W AC brick so the laptop will work as it should, so I am arranging a 90w one to come in later. But on a second thought, if the battery cannot start the laptop with 8GB of RAM properly.
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Is it the CPU or RAM or Mobo or something else? Where should I look?The machine works fine with the previous CPU i3-2310m and 8GB of RAM.The RAM modules I have are 2 x 4GB Samsung 2Rx8 PC3-12800S-11-11-F3.The BIOS version is updated to the latest 1.46.
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Nov 25, 2013
I enjoy the feature of automatically powering off the optical drive in power manager. My issue is after reformatting my T530 the option is there until I do an update using the Lenovo ThinkVantage System Update. One of the updates seems to remove the feature from the power manager.
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Oct 21, 2014
After replacing the fan, I have a power up issue with the laptop. Basically, the laptop will only power on with the power cable disconnected at the motherboard. It was by mistake that after the fan was replaced and everything was put back together, that I noticed that the battery was not charging.
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I then reopened the machine and reconnected the power cable to the motherboard and nothing - no power.
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When plugging in the power source with the battery in place, the LED adjacent to the power socket lights up WHITE then stays ORANGE and will not power up. No other lights, no fan noise, nothing.
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If I remove the battery, the LED adjacent to the power socket lights up WHITE and stays white however will not power up either. Same agin, no other LEDs, not fan noise, nothing.
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I have now opened the machine back up and disconnected the power from the motherboard. Put it all back together and the laptop powers up as normal with the battery and it works fine. (Well until the battery runs out anyway).
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Jan 27, 2013
Our Studio 1749 will retain a solid connection when the power adapter is plugged into the power board along the side of my laptop. I am unsure if the pins residing in the power board are pushed toward each other so as to not retain connection when the adpater in plugged into the laptop.
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Aug 2, 2007
When I pull the power cord to switch to battery power while in Windows my lcd goes to black. The only way I get my video back is a hard reset and reboot. Later on I tried this and everything was back to normal. Why is this happening? Is this some weird standby?
Dell Inspiron 1505 Bios A-14
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Aug 14, 2009
I'm having some issues with my MacBook's USB hub. I have the macbook from 2007 I believe that has 2.0GHz and 1GB of RAM. WHenever I connect my iPhone to the USB port to sync, it pops up with this dialog box that says that my iPhone is drawing too much power and thus the USB hub will be deactivated.
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Oct 13, 2014
I have an Aspire 6930 that suddenly died and will not power on. The LED power button was dark and unresponsive. I performed a power reset and the blue light on the power button came back on until I pressed the button to try to restart the laptop. When I did that, the blue LED immediately went dark and stayed that way until I did another power reset. It never gets to the point of anything powering on. Is it a problem with the battery or it the laptop toast?
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This is a real bummer since I just replaced the hard drive a few weeks ago and replaced Windows Vista with Linux Mint (which btw is blazing fast compared to Vista).
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Apr 20, 2014
Acer 5253 - Will not power on, battery or on AC power. Have tried all the suggested solutions but none have worked. Is it possible to get maintenace instructions (disassembly, where certain items are located, etc)?Â
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Apr 27, 2010
Can't seem to find any users of the Probook 4720s yet, it got a nice review over at: HP ProBook 4720s Review - A Review of the HP ProBook 4720s - the viewing angles looks amazing from those pics, but I wonder if it's a trick?
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Oct 20, 2014
I have a HP Probook 4540s Notebook PC. I reinstalled the operating system (Windows 7 Ultimate) recently and installed all the necessary drivers required for the PC. But now as I connect a USB 3.0 hard disk into the USB 3.0 ports ( the left two ports), i get an error message. The message is shown below:
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"Device can perform faster : This USB Mass Storage Device can transfer information faster if it is connected to a Super-Speed USB 3.0 Port"
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The speed of the data transfer also seems to be very low, in the ranges of 20-30 Mbps.
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I'm not sure if I have installed the correct driver for the hardware. As for now, as shown in the Control Panel, I have installed "Intel USB 3.0 Extensible Host Controller Driver".
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Sep 24, 2014
I have a HP probook 450 with 4gig of ram. So today I bought another 8gig of ram and installed it. When I boot up my pc it says the hardware is not supported, but when it boots up and I play a game, for example, I can see my pc performing better. note new ram card= Adata DDR3 1600 PC3-12800 8gb
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Mar 11, 2010
I recently ordered a dm3t with pretty much all the upgrades during one of the sales.
Pretty much the same day I did that, the probook 4320s showed up on their website.
I'm trying to decide if I should return the dm3t and order one of the probooks. Right now the probook doesn't offer the discreet 512mb graphics card or 64 bit OS as choice but the customer support people say it will become available soon.
Basically I just dont know if it's worth the extra money for things like a better cpu, gpu, DVD, and fingerprint scanner.
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May 12, 2009
I intend to use it primarily for some fairly intensive gaming (Fallout 3, etc), media (music, movies), and general work stuff (web surfing, word processing, etc)
I have had an IBM for the last four years and it has served me quite well. My experience with IBM tech support was always good, and the one time I had to get it fixed it was returned promptly, no questions asked.
However there is an HP ProBook that looks quite appealing.
It costs $1865
It ships with Windows XP (important to me)
It has a 2.53 GHz Core 2 Duo Processor
It has a 512 MB ATI video card
3GB of DDR2 Ram
It has a 320 GB 5400rpm HD
It has a 17.3" widescreen 1600x900 display
And here's the kicker: a Blu-Ray drive
The Lenovo is a Thinkpad W500. It is generally quite similar in specs, and a bit cheaper, but it has a 15.4 inch screen (albiet a higher resolution one) and lacks the Blu-Ray drive..............
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Apr 17, 2010
impressions on the ProBook 4320s? I've scoured the web trying to find reviews on the laptop, but I've come up with no luck.
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Nov 4, 2009
I have recently purchased a HP Probook 4415 s. I have a problem with the key pad. The key strokes are misplaced , I mean when I press shift 2 - instead of typing @ , it types " . When I press shift 3 - instead of typing hash sign, it types £. I am confused and discomforted by this, Please suggest corrective action to resolve this.
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Apr 10, 2014
Bought this ProBook, with SSD, because I specifically wanted an SSD and Windows 7.I figured that 128Gb would be enough to run Windows and some of my graphic software, but when I booted up the computer I noticed that of the 128Gb just over 100Gb was filled with pre-installed software, much of it HP stuff.I only installed Adobe CS6, Lightroom 5 and some really light stuff, and I'm running everything else off external drives. But with continuous updates from Windows and HP software my C drive has filled up and I'm now looking at only 6Gb free space anymore. Which software I can safely delete and which is absolutely necessary to run the system?It's slightly misleading to buy a computer with 128Gb SSD only to find it nearly full with pre-installed software.
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Oct 10, 2014
I was parchased HP probook battery before 4 months. But now it responed me that it is not charging. The battery is not damaged. what are alternative solutions?
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Aug 18, 2010
I just bought 2 weeks ago new ProBook with Windows 7 Professional in it. Laptop itself is nice but I'm having constant struggle with my internet connection. I'm having Wlan in the house and I have my old Sony Vaio, This ProBook and one Axus tablet using it. (not at the same time). Router itself is from local internet/sky chanel provider with their own covers so I dont know the manufacturer/model and in this case it does not matter. Internet works totally fine with Axus and Sony but not with this. I can see problem is not Windows7 or router.
Problem is some HP own Client security setting program. Nice to have one but I can see there is some firewall that is turning the connection down and after some "resetting", "let windows solve the problem" and restarting etc it lets itself get back up and after a while disconnects it again. Yellow ! sign turn on the connection bar and it says "limited connection". I have almost full signal all the time so even that is not reason.
And again, I do not have any problems with other devices. It is OFF several minutes 80% of the times when windows starts. Then with some fighting, it turns on. Sometimes even without me doing nothing. I just can't find the way/link to turn off the HP "security program". I do use F-Secure Internet Security 2015 to secure my HP against spyprograms and viruses so it is enough for me. HP security program is nice but if it turns so much problems for me I will turn it off.
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Sep 24, 2014
I just bought new HP Probook 470 G1 computer, and I can't make the FN button working with F7/F8 or F9/F10 which is useful for brightnes and volume. When i press FN + F3 computer goes to sleep mode, but other functions doesn't work.
I have been trying to download HP Quick Launch Buttons (International) , HP Softpaq Donload Manager, trying to change options in BIOS and still nothing...How to make these buttons work?
I'm using Windows 7 ultimate x64.
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Aug 22, 2014
My hp probook 4530s DVD/CD ROM can't read dvds when i insert them am running on window 7 32bits.
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May 15, 2012
I have a ProBook 4720s laptop, Windows 7 64-bit
The problem is that the fan on my computer always stays at minimum speed and as the computer heats up, the fan will not speed up to its full speed. The computer gets really hot ~70°C. The problem occurred when I upgraded bios to its latest version F.20. I believe that there is a bug with this bios- that the bios will not control the fan properly. This type of notebook has a history of bios bugs: its original bios made the fan run all the time at full speed which was fixed with a bios upgrade.
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This bios came with a note that I cannot downgrade to a previous version that worked well. So my question is, can I expect a bios upgrade for this computer that would fix the error.
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Sep 25, 2014
I have an hp probook 450 g1 ..the taskbar shows the Bluetooth symbol but i m not able to find other devices or send or receive anything other devices are also not able to detect my Bluetooth..i have already set the Bluetooth discoverable in the settings..
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Apr 4, 2014
I bought HP Probook 450 G1 Notebook PC in March, 2014. I installed Windows 7 Ultimate 64-bit. For the first few days it worked well without any problem. But now about 60% of the time when I try to shut it down, it freezes at "Shutting Down..." screen. I then need to press the power button for some time to force it to go off.
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1. How can I permanently get rid of this problem?
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2. If I can't, then is this problem a serious one that can harm my pc?
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