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Falko
Punch Card
Posts: 19
Registered: ‎01-27-2012
Location: Germany
Views: 759
Message 1 of 9

T420S - no boot/startup anymore

Hi,

 

my T420S behaves kinda weird: It simply doesnt startup anymore. Screen is blank (cant enter/see BIOS), no usb-power, no functionkeys are working. I already swapped the Ra, Hdd, Battery with no luck. Even in the docking station the situation is similar. This tuesday everything was fine, now it isnt anymore.

 

Just to clarify: it no a linux/windows issue, since it doesnt even come to this point. I also checked for damaged usb port (this wasnt the case).

 

Any ideas? Similar behaviors?

 

Regards,

Falko

 

 

Kicker774
Token Ring
Posts: 261
Registered: ‎01-24-2011
Location: Columbus, OH
Views: 751
Message 2 of 9

Re: T420S - no boot/startup anymore

Doesn't sound promising.

 

Does the unit actualy power on. Your getting a green ring around the power button?

Reseat your RAM first.

 

Next option you can try to remove the keyboard, then remove the BIOS battery and try powering on again after the unit has been sitting for about an hour.

 

If the system has zero power whatsoever (AC only without battery or battery only) then sounds like it's time to call up Lenovo for a warranty repair.

 

 

Falko
Punch Card
Posts: 19
Registered: ‎01-27-2012
Location: Germany
Views: 747
Message 3 of 9

Re: T420S - no boot/startup anymore

Already tryed this - no luck. Conclusion (for me) seems actually that the mainboard is dead.

Guru
Posts: 2,524
Registered: ‎03-19-2009
Location: DE
Views: 742
Message 4 of 9

Re: T420S - no boot/startup anymore

Check all USB port, whether they are well and there is no part missing and no short.

--------------------------------
My home-forum: http://www.thinkpad-forum.de
Wiki: Deutsches ThinkPad-Wiki English ThinkWiki
My ThinkPad-Collection
Coffee must be like women's eyes: deep black & shiny. ThinkPads have to be like men's feet: deep black & matte!
icantux
802.11n
Posts: 265
Registered: ‎02-04-2008
Location: Canada
Views: 723
Message 5 of 9

Re: T420S - no boot/startup anymore

Also check that you don't have an SD card in the slot.

 

Something similar happened to me, I inserted an SD card into the slot of my (now dead) x200 the day before, then next day the thing wouldn't boot, no BIOS, nothing. Completely unresponsive. Was about to take the x200 apart trying to troubleshoot the problem until I realized there was an SD card in the slot... plucked it out, rebooted, no problems.

 

Strange but true. Just throwing it out there...

Falko
Punch Card
Posts: 19
Registered: ‎01-27-2012
Location: Germany
Views: 701
Message 6 of 9

Re: T420S - no boot/startup anymore

No SD-card in there and the usb-ports are fine. The symptoms dont change even with no ram installed at all. Seems like a dead notebook currently.

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 695
Message 7 of 9

Re: T420S - no boot/startup anymore

If there's no RAM, the system should make a 1-3-3-1 beep sequence. If not, it sounds like the motherboard is at fault.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
Guru
Posts: 2,524
Registered: ‎03-19-2009
Location: DE
Views: 671
Message 8 of 9

Re: T420S - no boot/startup anymore

Did the laptop get contact with liquids in the past? In that case its behavior is the consequence.

--------------------------------
My home-forum: http://www.thinkpad-forum.de
Wiki: Deutsches ThinkPad-Wiki English ThinkWiki
My ThinkPad-Collection
Coffee must be like women's eyes: deep black & shiny. ThinkPads have to be like men's feet: deep black & matte!
Falko
Punch Card
Posts: 19
Registered: ‎01-27-2012
Location: Germany
Views: 649
Message 9 of 9

Re: T420S - no boot/startup anymore

No liquids, no sound. I contacted support and they will pick it up sooner or later. Lets see how long it takes for UPS and Lenovo to examine the case. Smiley Happy

 

Ty so far for all ideas.

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