iFixit - Answers With Device "Lenovo ThinkPad T520"

Lenovo ThinkPad T520: On startup it beeps and has blackscreen. help!

Sun, 03 Jul 2022 06:13:28 -0700

So when i start my computer it has a black screen and beeps, its 3 beeps followed by another 3 then followed by 1. I suppose its like a RAM issue from what ive read but i dont know if the solutions apply to my computer. Its my school comp btw so need it fixed ASAP :) (not very technical)

⟐ Answered July 03, 2022 at 6:13 MST

Lenovo ThinkPad T520: Keyboard malfunction some keys work

Sun, 11 Oct 2015 15:40:23 -0700

Some keys not working.

⟐ Commented October 11, 2015 at 15:40 MST

Lenovo ThinkPad T520: Can't Access BIOS Settings using F2/F1. Operating System not found.

Thu, 22 Mar 2018 13:30:15 -0700

I turned on my laptop, boot settings appeared, pressed the F Keys BIOS not appearing than next thing Operating System Not Found. Please Advise me what to do and how to go about fixing it!

⟐ Commented March 22, 2018 at 13:30 MST

Lenovo ThinkPad T520: My thinkpad T510 wont turn on

Tue, 07 Mar 2017 09:52:15 -0700

Hello,

I have a thinkpad T510, and had it for two years and a half. It was working fine ( I usually work with both battery and AC adapter plugged in) Last week, it wont turn on. I hit the power button and nothing comes out of it. when I plug the AC, it the battery button is on. I took it to the repair shop, and he had it fixed he didn't tell me what was the problem (he took the laptop to another shop so he didnt know what was the problem) Two days later, same issue. it wont turn on. What could be the reason?

I've noticed when it was fixed and I turned it the date was a day late. it was 3/2/2017 and it showed on screen 3/1/2017.

I've also tried hitting the power button 10 times with 1s interval then pressing it for 30s. still wont turn on.

⟐ Commented March 07, 2017 at 9:52 MST

Lenovo ThinkPad T520: How much cost display change Lenovo ThinkPad T520 15" Notebook PC?

Thu, 27 Aug 2020 00:00:37 -0700

How much cost display change Lenovo ThinkPad T520 15" Notebook PC???

⟐ Answered August 27, 2020 at 0:00 MST

Lenovo ThinkPad T520: unable to connect HDMI sound

Thu, 19 May 2022 18:08:37 -0700

how do I enable HDMI sound . from laptop to tv

⟐ Comment deleted May 19, 2022 at 18:08 MST

Lenovo ThinkPad T520: Computer is on but screen black?

Wed, 21 Oct 2020 20:27:35 -0700

My laptop worked yesterday. Today I attempted to turn it on as usual, pressing the power button. It made all the usual noises. On startup, It makes a beeping noise, but that is normal. Today the screen is completely black. I can tell it’s on. The fans are running and the light is on. Still, the screen is black.

⟐ Answered October 21, 2020 at 20:27 MST

Lenovo ThinkPad T520: Computer says my password is wrong?

Sun, 14 Apr 2019 20:35:07 -0700

I stopped using my computer for a few months, and when I tried to log in again it says my password is wrong. I know for a fact it isn’t wrong because my other computer that is connected to the same Microsoft account logs in fine. It isn’t because my number lock/caps lock, as it still doesn’t work when I toggle them on and off. In addition, my wifi has changed so this computer is not connected and I am not able to connect it unless I can log in. It’s a pretty old computer but has worked fine for years. Any help would be appreciated :)

⟐ Answer edited April 14, 2019 at 20:35 MST

Lenovo ThinkPad T520: Why is my computer freezing after user sign in?

Tue, 24 Jul 2018 06:20:16 -0700

After I use my password to log in, and once it is done loading from being shut off, I will click on anything at all and it freezes and will not load.

⟐ Answered July 24, 2018 at 6:20 MST

Lenovo ThinkPad T520: unresponsive to any command

Tue, 19 Jun 2018 01:45:28 -0700

tried to upgrade to windows 10 from 7,when asked to let system run,laptop became unresponsive and requested administrator password,do not have it and now locked out totally,how to hard reset to use laptop again?

⟐ Answer edited June 19, 2018 at 1:45 MST

Lenovo ThinkPad T520: My laptop says charging but it isn't

Tue, 02 Jan 2018 08:56:16 -0700

Hi there

I got a T530 ( not 20). My laptop says it's charging but the percentage isn't raising. I already bought a new battery but the problem persist. The new battery discharged( only when the Ac adapter wasn't plugged in )

Ac adapter: 90 W and 20 V

I messured the Volts with a mulitmeter as described in the comments, the result was 33 V

Lenovo 0A36303 Thinkpad Battery 70++ (9Cells, 8400mAh)

Should i buy a new AC adapter? When yes a stronger or the same one ?

Or is there a way to fix my AC adapter?

⟐ Answered January 02, 2018 at 8:56 MST

Lenovo ThinkPad T520: Screen is too blue

Mon, 28 Aug 2017 18:27:53 -0700

Lenovo T520 running Windows 10 pro. It's not the Blue Screen of Death, it's that areas that should be white are blue, and the resolution is poor. Periodically corrects itself for an hour or 2. This has happened before, and preceded a hard drive crash during a system update. Following the crash,the hard drive can't be recognized and has to be formatted. The second time, I replaced the hard drive but it didn't solve the screen problem and again crashed on updating. That time I restored to Windows 7 with the factory recovery disks. It hasn't crashed yet (3 days) but the screen is still too blue most of the time. It passes all the diagnostic tests except the one where the screen should be all white (it's blue). The problem is present on the splash screen when booting up, which I'm told means a hardware issue. I've read that for people with desktop systems this problem is sometimes the cable. So finally the question: should I open up the laptop and mess with the cable? Any other ideas?

Thanks a lot!

So I removed the LCD screen and, obviously, detached that end of the cable, and I've exposed the other end of the cable, but I'm not sure how to detach it. Does it just slide out the screen end, or do I have to release some clip or something? Please see photo. Thanks!

It works! I cleaned both ends of the cable and both connectors, put it back together and it booted up normally. It's been fine all day and I think it would have reverted to blue by now if it was going too. Many thanks!

⟐ Edited by author August 28, 2017 at 18:27 MST

Lenovo ThinkPad T520: Will not start windows 7

Tue, 13 Sep 2016 19:42:01 -0700

What can I do to start widows 7 when I first start computer.

⟐ Answered September 13, 2016 at 19:42 MST

Lenovo ThinkPad T520: What upgrades can I do with the T520

Thu, 12 Feb 2026 15:40:21 -0700

What upgrades can be done on the T520

Lenovo ThinkPad T520: Internel bluetooth not working?

Sat, 09 Sep 2023 08:57:34 -0700

Bluetooth not working in windows 11

⟐ Commented September 09, 2023 at 8:57 MST

Lenovo ThinkPad T520: messed up with bios settings on P520 Thinksation

Tue, 22 Feb 2022 21:17:50 -0700

I messed up with bios settings on P520 Thinksation. Took out CMOS battery for several minutes, did not help. Any suggestions how to proceed?

⟐ Commented February 22, 2022 at 21:17 MST

Lenovo ThinkPad T520: Screen Replacement 720p to 1080p is very dimly lit

Thu, 18 Jun 2015 17:01:09 -0700

After replacing the 720p screen, part number: LTN156AT24 with a 1080p screen part number :N156HGE-rev C1 , the splash screen is now very very dim(can hardly make out the thinkpad words). Then to dark to make out anything else. Any ideas to resolve this is greatly appreciated.