ACPI error at startup

macbook air, late 2008, 128 gig ssd hd

i've used windows 7 on air using bootcamp 6 months. worked @ first started act up:

works fine.
slow startup, stuck @ windows splash screen > 4 min. slow shutdown. @ slow shutdown bsod saying driver_power_state_failure flashes before system turns off.
slow recovery hibernation , standby.
above problems seem appear randomly.

when checking event viewer after slow startup 15-20 acpi errors (eventid 13) in row, wasting 3+ minutes alltogether.
recovering sleep , hibernation generates hal error (eventid 12) or disk error (eventid 11).

had apple service @ , claim nothing wrong hardware, using computer in osx 10.6 seems work fine. kind of looks hardware related me since windows worked fine long time @ first. tried multiple re-installs, different (legit) copys of windows.

known type of error mac + windows? i'm unsure how proceed i'm throwing out there clues. grateful suggestions.

heres full bluescreen info:
problem signature:
problem event name: bluescreen
os version: 6.1.7601.2.1.0.256.48
locale id: 1053

additional information problem:
bccode: 9f
bcp1: 00000003
bcp2: 85548b58
bcp3: 82d71ae0
bcp4: 865dd400
os version: 6_1_7601
service pack: 1_0
product: 256_1

 

also got acpi - id 13 - frequently

setting: macbook pro (2010) // bootcamp // windows 7
of lately screen freezes in different applications 3 minutes - no keyboard or mouse activities, after goes on nothing happened. trace of these events event protocol states exact same error event (13 / acpi) formentioned time span. don't remember having major updates of windows or mac-windows-utilities within near past don't have clue comes from.
ideas??

 

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