Ecran bleu: divers erreurs

Bonjour,
Je viens d'installer windows 7 sur mon HP Pavillon Elite m9170 qui était sous Vista.

Depuis, des plantages (Blue Screen Of Death) que voici:

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A problem has been detected and Windows has been shut down to prevent damage
to your computer.

The problem seems to be caused by the following file: ntkrnlpa.exe

DRIVER_IRQL_NOT_LESS_OR_EQUAL

If this is the first time you've seen this stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If this is a new installation, ask your hardware or software manufacturer
for any Windows updates you might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use safe mode to remove or disable components, restart
your computer, press F8 to select Advanced Startup Options, and then
select Safe Mode.

Technical Information:

*** STOP: 0x000000d1 (0x00000960, 0x00000002, 0x00000008, 0x00000960)

*** ntkrnlpa.exe - Address 0x82c8765b base at 0x82c46000 DateStamp 0x4f766ae5
--------------------------------------------------------------------------------------------------------------------
A problem has been detected and Windows has been shut down to prevent damage
to your computer.

The problem seems to be caused by the following file: halmacpi.dll

KERNEL_MODE_EXCEPTION_NOT_HANDLED

If this is the first time you've seen this stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If this is a new installation, ask your hardware or software manufacturer
for any Windows updates you might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use safe mode to remove or disable components, restart
your computer, press F8 to select Advanced Startup Options, and then
select Safe Mode.

Technical Information:

*** STOP: 0x1000008e (0xc0000005, 0x82e307ec, 0x865398f0, 0x00000000)

*** halmacpi.dll - Address 0x8301eba9 base at 0x83019000 DateStamp 0x4ce788d2
----------------------------------------------------------------------------------------------------------------
A problem has been detected and Windows has been shut down to prevent damage
to your computer.

The problem seems to be caused by the following file: ntkrnlpa.exe

BAD_POOL_HEADER

If this is the first time you've seen this stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If this is a new installation, ask your hardware or software manufacturer
for any Windows updates you might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use safe mode to remove or disable components, restart
your computer, press F8 to select Advanced Startup Options, and then
select Safe Mode.

Technical Information:

*** STOP: 0x00000019 (0x00000020, 0xab812318, 0xab812368, 0x0a0a0201)

*** ntkrnlpa.exe - Address 0x82b63c6b base at 0x82a43000 DateStamp 0x4f766ae5
----------------------------------------------------------------------------------------------------------------
A problem has been detected and Windows has been shut down to prevent damage
to your computer.

The problem seems to be caused by the following file: ntkrnlpa.exe

IRQL_NOT_LESS_OR_EQUAL

If this is the first time you've seen this stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If this is a new installation, ask your hardware or software manufacturer
for any Windows updates you might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use safe mode to remove or disable components, restart
your computer, press F8 to select Advanced Startup Options, and then
select Safe Mode.

Technical Information:

*** STOP: 0x0000000a (0x839fffcc, 0x00000002, 0x00000001, 0x82ae3b9c)

*** ntkrnlpa.exe - Address 0x82a8c65b base at 0x82a4b000 DateStamp 0x4f766ae5
----------------------------------------------------------------------------------------------------------------
A problem has been detected and Windows has been shut down to prevent damage
to your computer.

The problem seems to be caused by the following file: ntkrnlpa.exe

KERNEL_MODE_EXCEPTION_NOT_HANDLED

If this is the first time you've seen this stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If this is a new installation, ask your hardware or software manufacturer
for any Windows updates you might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use safe mode to remove or disable components, restart
your computer, press F8 to select Advanced Startup Options, and then
select Safe Mode.

Technical Information:

*** STOP: 0x1000008e (0xc0000005, 0x82c6149f, 0x82673838, 0x00000000)

*** ntkrnlpa.exe - Address 0x82c6149f base at 0x82a3f000 DateStamp 0x4f766ae5
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J'ai mis à jour mes pilotes(pas le BIOS je ne sais pas le faire), fait un sfc/scannow, memtest86, vérification de disque et AUCUN des test n'a révelé d'erreurs sauf le sfc/scannow mais il les a résolus.

Avast, Spybot et Malwarebytes n'ont rien détectés.

Je n'en peux plus!!!!!

Les proffessionels où êtes vous???

<config>Windows 7</config>