Una serie di BSOD

[Pagno89]

Salve a tutti.

Sto cercando di risolvere un problema che riguarda un pc (c'è installato su Win7 x64) non mio.

Il problema è che si verificano questi BSOD dopo un po che lo si utilizza, infatti sto operando dalla modalità provvisoria. Quello che ho capito è che riguardano il file ntoskrnl.exe

Vi riporto le varie schermate degli errori recenti, mi sapreste dare consigli? Grazie

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: ntoskrnl.exe

REFERENCE_BY_POINTER

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: 0x00000018 (0x0000000000000000, 0xfffffa800c0e1640, 0x0000000000000002,
0xffffffffffffffff)

*** ntoskrnl.exe - Address 0xfffff8000348a080 base at 0xfffff80003416000 DateStamp
0x56bcc786

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: ntoskrnl.exe

PFN_LIST_CORRUPT

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: 0x0000004e (0x0000000000000099, 0x00000000001fbcd7, 0x0000000000000002,
0x000000000022d853)

*** ntoskrnl.exe - Address 0xfffff800034ca080 base at 0xfffff80003456000 DateStamp
0x56bcc786

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: ntoskrnl.exe

PFN_LIST_CORRUPT

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: 0x0000004e (0x0000000000000002, 0x000000000018eba8, 0x000000000023f7ff,
0x00000000000000ba)

*** ntoskrnl.exe - Address 0xfffff800034da080 base at 0xfffff80003466000 DateStamp
0x56bcc786