Hi Pimsky,
Just to corroborate with what jcgriff2 has said, the first bugcheck argument being 0 in a Stop 0x124 means that it is a processor type error, we can see that it is a Machine Check Exception.
[CODE]1: kd> .bugcheck
Bugcheck code 00000124
Arguments 00000000`00000000 [COLOR=#0000ff]fffffa80`061fa028[/COLOR] 00000000`be200000 00000000`00011152[/CODE]
[CODE]
1: kd> !errrec [COLOR=#0000ff]fffffa80`061fa028[/COLOR]
===============================================================================
Common Platform Error Record @ fffffa80061fa028
-------------------------------------------------------------------------------
Record Id : 01d158db17951785
Severity : Fatal (1)
Length : 928
Creator : Microsoft
Notify Type : [COLOR=#ffa07a]Machine Check Exception[/COLOR]
Timestamp : 1/27/2016 23:40:42 (UTC)
Flags : 0x00000000
===============================================================================
Section 0 : Processor Generic
-------------------------------------------------------------------------------
Descriptor @ fffffa80061fa0a8
Section @ fffffa80061fa180
Offset : 344
Length : 192
Flags : 0x00000001 Primary
Severity : Fatal
Proc. Type : x86/x64
Instr. Set : x64
Error Type : Cache error
Operation : Instruction Execute
Flags : 0x00
Level : 2
CPU Version : 0x00000000000206a7
Processor ID : 0x0000000000000001
===============================================================================
Section 1 : x86/x64 Processor Specific
-------------------------------------------------------------------------------
Descriptor @ fffffa80061fa0f0
Section @ fffffa80061fa240
Offset : 536
Length : 128
Flags : 0x00000000
Severity : Fatal
Local APIC Id : 0x0000000000000001
CPU Id : a7 06 02 00 00 08 10 01 - ff e3 ba 1f ff fb eb bf
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
Proc. Info 0 @ fffffa80061fa240
===============================================================================
Section 2 : x86/x64 MCA
-------------------------------------------------------------------------------
Descriptor @ fffffa80061fa138
Section @ fffffa80061fa2c0
Offset : 664
Length : 264
Flags : 0x00000000
Severity : [COLOR=#ff0000]Fatal[/COLOR]
Error :[COLOR=#ee82ee] I[/COLOR]CACHE[COLOR=#ff8c00]L2[/COLOR]_[COLOR=#00ffff]IRD[/COLOR]_ERR (Proc 1 Bank 7)
Status : 0xbe20000000011152
Address : 0x00000000430dbd40
Misc. : 0x0000007022004086
[/CODE]
Since you already ran Prime95 and experienced the crash again shortly after, that would suggest hardware failure; certainly sounds like overheating based on your description. You're already on the latest BIOS version for your laptop (68SVD Ver. F.60), and your CPU isn't overclocked:
[CODE]1: kd> !sysinfo cpuspeed
CPUID: "Intel(R) Core(TM) i7-2820QM CPU @ 2.30GHz"
MaxSpeed: 2300
CurrentSpeed: [COLOR=#008000]2294[/COLOR][/CODE]
Given the age of the laptop, it seems like a safe assumption that you're well out of warranty. Depending on how comfortable you are with computers, you could try taking apart your laptop and seeing if the vents/CPU fan need to be cleaned. If it's very dusty in there, it could be causing you to overheat. HP's recommendation is just to blow compressed air into the vents, but it would be more thorough to take the back plate off and carefully remove any visible dust in the CPU fan or in the vents.
