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tinkergeek
Paper Tape
Posts: 2
Registered: ‎07-21-2016
Location: US
Views: 432
Message 1 of 4

E520 slows/black screen after BIOS update. Can I undo BIOS update?

In preparation for Win 10 key I updated the BIOS on an E520 using the Lenovo Service Bridge.  Os is Win 7 64-bit.  LSB showed old BIOS was backed up.

 

Old bios   LENOVO 8HET30WW(1.12)

 

New bios LENOVO 8HET44WW(1.26)

 

Now bootup and windows start up are painfully slow.  Further there is a black screen in the middle of the wake up process.

 

How can I undo the BIOS update to revert back to Old bios   LENOVO 8HET30WW(1.12)?

 

Or can anything be tweaked to improve the bootup time?

Community SeniorMod
Community SeniorMod
Posts: 6,608
Registered: ‎01-13-2008
Location: US
Views: 394
Message 2 of 4

Re: E520 slows/black screen after BIOS update. Can I undo BIOS update?

Hello and welcome,

 

The older versions of the BIOS are located at the bottom of the download page:

 

http://support.lenovo.com/us/en/products/Laptops-and-netbooks/ThinkPad-Edge-laptops/ThinkPad-Edge-E5...

 

Z.


The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


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tinkergeek
Paper Tape
Posts: 2
Registered: ‎07-21-2016
Location: US
Views: 379
Message 3 of 4

Re: E520 slows/black screen after BIOS update. Can I undo BIOS update?

Thanks!  Noticed there is not a package for 8HET30WW.  Is the next best thing to pick a near version by package number or by 8HETxxWW number?

alex5723
802.11n
Posts: 375
Registered: ‎05-01-2012
Location: IL
Views: 364
Message 4 of 4

Re: E520 slows/black screen after BIOS update. Can I undo BIOS update?

E520 isn't Windows 10 compatible.

 

https://support.lenovo.com/il/en/documents/ht103535#thinkpad

 

p.s I am running LENOVO 8HET44WW(1.26) on  my E520 with zero problems since release.

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