T61 Black Screen

[Erikgoranzon]

My lenovo t6 gives my a black screen randomly when im on battery.

It happens when Im not using the computer for a couple of minutes. I have set in the power manager that the screen never should shut down.

When it does get black I cant run the screen to an external monitor (no signal). The lights for hard drive, battery, bluetooth, (N sign), wireless are all lit up.

When i turn of the wireless button on the front the bluetooth light goes off but the wireless lan keeps FLashing.

I recently formated the laptop. could there be some drivers missing that give this error.

Please advice, Every time this happens I have to press the on/off button to restart.

Thanks

Lenovo T61 - 7665, Windows 7 32Bit

14,1 widescree, T9300 2,5Ghz, 4Gb ram

[Erikgoranzon]

It might have something to do with hibernation.

When Im trying to put the computer into hibernation presseing fn+f12 the computer just shows me a black screen and the wlan,bluetooth, hardrive,power,battery lights are turned on.

Only way I found to get out of it is to press the on/off until shutdown.

PLEASE, have someone else had this problem?

[Erikgoranzon]

I just docked the computer for the first time since I formatted the computer.

After 15min the screen went black, propably because the laptop (t61) wanted to go into sleep mode or hibernate which doesnt work apparently.

I have installed all the updates out there i think.

ANYone?

[lead_org Microsoft MVP Contributor]

download HWinfo32 and check the system temperature.

[Erikgoranzon]

I have recently replaced the thermal paste and heatsink and I use tpfancontrol to keep temperatures below 62degrees at all time. I had this problem before replacing thermal paste and heatsink.
Or do you still need my system temperatures?

[lead_org Microsoft MVP Contributor]

do you have the nvidia gpu?

[Erikgoranzon]

I believe so I have the Nvidia Quadro NVS 140M. When I replaced the heatsink it sad nvidea on the plate next to the processor, i guess this is the GPU.

[TuuS]

Try turning off all system timers in power options. You may have a minor software problem where your power management isn't working properly, or you could have a serious hardware problem, so lets disable the times, if the problem stops presenting, then it's just a matter of getting your drivers and power manager working, if there is no effect, then you may have a problem that's more serious.

ps. What is the four digit date code after the serial number. It will start with the year "08" followed by the month.

[Slyone]

Why did you replace the heatsink???

1st> do a bios update

2> then graphic driver update.

3> then re-install power manger or disable by having it do nothing at all.

4> How do you know that machine is on and lcd not working...

[TuuS]

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Slyone wrote:

1st> do a bios update

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This is just my opinion and no disrespect intended towards the member who is clearly trying to help, but if your system is unstable, which I do suspect, and it shuts down or crashes in the middle of a bios update, then your system board could become completely useless. Your bios isn't likely to suddenly cause a problem like this and this computer obviously worked for several years with this bios, so I see no reason to update it and a lot of risk if you do.