?!? windows HANGS at P.O.S.T after restart? (have to hard-reset)

so I noticed that only now windows hangs at POST every time I restart (fans running, no signal to monitor)

shutdown goes without a problem, only restart is buggy

2 things:

1) it only hangs after the latest cumulative monthly rollups. before that it would restart normally, signal to monitor would still get cut off but only for a second, then Bios would beep & POST

2) it only hangs if C3 & C6 states are enabled (however before the rollups I could leave them enabled & still restart normally)
which means there's a bug in the rollups (at least the last 2 ones)

so my question is, since disabling C-states is out of the question and since reverting pre-rollup is also out of the question, how can I fix this & have the system restart normally like it used to?

fireberd said:

Just a comment. If it hangs at "POST" (Power On Self Test) that has nothing to do with Windows. Windows hasn't started to load yet.

so somehow

- BEFORE installing monthly rollup, Restart works normally

and

- AFTER installing monthly rollup, Restart no long works normally? (no signal to monitor but cpu fan still running)

yet this has nothing to do with windows? so could the monthly rollup somehow alter the bios itself or something???

If you shut down first and then restart (as opposed to just restarting), do you have the same problem?

fireberd said:

By that statement it hangs up at the Power On Self Test. If this is true then yes it has nothing to do with Windows as its just going through the self test and then the BIOS takes over but even that is not loading Windows.

However, if its really getting by the POST and the BIOS, and hanging up not loading Windows then it could be something in the update.

it hangs before the "bios beep" (which happens before POST & before signal to monitor returns right?)

Try starting in Safe Mode (Press F8 before Windows starts to load) and if that starts, you can try a system restore before the updates.

that's the thing I want it to restart normally without uninstalling something as critical as the monthly rollups

mrjimphelps said:

If you shut down first and then restart (as opposed to just restarting), do you have the same problem?

nope like I said the windows shutdown ("acpi shutdown" as they call it) still works normally after the monthly rollup so I can do a clean shutdown then turn on the PC again as usual

only the direct restart is buggy after the monthly rollup
(and even then, only when C-states are enabled in bios. disabling those allows a normal restart, but then why disable them now when I didn't have to disable them before the monthly rollup?)



so to sum it up Windows 7 + monthly rollup + C-states* = no restarting

basically the monthly rollups are somehow incompatible with C-states

* C3 & C6 only. I can still leave C1 enabled & have a normal restart, even after monthly rollup

Bat just wondering what led you to disable c states to try to fix the problem ? Something specific to your configuration (Not Listed) that was posted elsewhere ?

Bat 1 said:

Bat just wondering what led you to disable c states to try to fix the problem ? Something specific to your configuration (Not Listed) that was posted elsewhere ?

no I just tried changing different bios settings till something worked ^^

then again I shouldn't have to disable the Cstates now since I didn't need to disable them before the monthly rollups