Blue Screen Error

finger360 · 01-04-2011, 11:32 PM

After upgrading my Lenovo Switchable graphics driver on my T500 I get a blue screen error "bad pool header" therefore causing me to revert to last known good configuration (in which my usb card works just fine) so then i did a clean install of windows and got the switchable graphics driver installed first and then attempted to install the displaylink driver and now i get the same blue screen error. So I believe there is some link between the two driver sets that causes this error, but I just have no idea how to fix it. As of now I am not using the usb video card because of this. Does anybody have any suggestions?

I have already tried the beta version of the display link software too. Working on downgrading switchable graphics driver.

Goofy · 01-17-2011, 08:34 AM

Did you find a solution to the "bad pool header" error? I've got the same message on my T500 but with the DisplayLink iPad software.

w500 · 02-09-2011, 04:18 PM

Work-around for this is to change from switchable graphics in BIOS to discrete (only). I was able to boot again after switching to discrete, but this is not ideal as it will reduce battery life.

To boot into BIOS:

Reboot comptuter and hold down lenovo support button.
In Display section, change setting from Switchable Graphics to Discrete.
Exit Bios, saving configuration.
Reboot.

Goofy · 02-11-2011, 08:52 PM

That worked. Thanks very much.

gateslinger · 02-15-2011, 03:02 PM

Same issue I have on my W500 with the latest ATI drivers. If you roll back the ATI driver to the 8.641.1.1-090824a-089811C-Lenovo (or the 7vd614ww.exe download off the Lenovo website) no BSOD.

At least it's the same issue as what I posted.

-G

01-04-2011, 11:32 PM	#1
finger360 Junior Member Join Date: Jul 2010 Posts: 1	Blue Screen Error After upgrading my Lenovo Switchable graphics driver on my T500 I get a blue screen error "bad pool header" therefore causing me to revert to last known good configuration (in which my usb card works just fine) so then i did a clean install of windows and got the switchable graphics driver installed first and then attempted to install the displaylink driver and now i get the same blue screen error. So I believe there is some link between the two driver sets that causes this error, but I just have no idea how to fix it. As of now I am not using the usb video card because of this. Does anybody have any suggestions? I have already tried the beta version of the display link software too. Working on downgrading switchable graphics driver.

02-09-2011, 04:18 PM	#3
w500 Junior Member Join Date: Feb 2011 Posts: 1	Same issue on Thinkpad w500 Work-around for this is to change from switchable graphics in BIOS to discrete (only). I was able to boot again after switching to discrete, but this is not ideal as it will reduce battery life. To boot into BIOS: Reboot comptuter and hold down lenovo support button. In Display section, change setting from Switchable Graphics to Discrete. Exit Bios, saving configuration. Reboot.

02-15-2011, 03:02 PM	#5
gateslinger Junior Member Join Date: Feb 2011 Posts: 6	Same issue I have on my W500 with the latest ATI drivers. If you roll back the ATI driver to the 8.641.1.1-090824a-089811C-Lenovo (or the 7vd614ww.exe download off the Lenovo website) no BSOD. At least it's the same issue as what I posted. -G Last edited by gateslinger; 02-15-2011 at 03:05 PM.

01-17-2011, 08:34 AM	#2
Goofy Junior Member Join Date: Jan 2011 Posts: 8	Did you find a solution to the "bad pool header" error? I've got the same message on my T500 but with the DisplayLink iPad software.

02-11-2011, 08:52 PM	#4
Goofy Junior Member Join Date: Jan 2011 Posts: 8	That worked. Thanks very much.