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Please help! My laptop is acting weird after changing processor

post #1 of 16
Thread Starter 
Hello everyone:)

Recently I swapped my laptop's i3-2330m with an ES version (Q16M) of i7 2620m (2 cores, 2.7 to 3.4 with TB). It has D0 stepping instead of D2 in retail, thats the only difference I can see.
BIOS and Windows recognized it as "Genuine Intel CPU 0", while cpu z Name line and core temp recognized it as "Intel Core i7 2620m (ES)". cpuz specification line is genuine thingy, though.
After changing, my laptop boot just fine. But it feel somewhat laggy. I found out in cpu-z that cpu only running at 800mhz whatever task push it to, in example, The Sims 3 sluggish to fast forward while the cpu seems not trying to break a sweat, whlie my i3 perform just fine. After some restart it running at 3ghz with all cores and TB blinksmiley.gif
Then I play some games with PhysX and here the problem: dreaded BSOD code 124 after 5-10 min of gameplay. I think it might be some driver problem so I re-install Windows 7 and fully install drivers and update etc. BSOD still occur:mad:. I use ThrottleStop to force processor running at max multiplier, it seems to be holding game a bit longer but after like 15 mins, it BSOD again. Worse, this time windows cannot boot up anymore:confuseds. After the "Starting windows" screen, BSOD code 124 happen over and over again. I have to swap out with old i3 for next day's school sadsmiley.gif
Temp are in safe range: Between 35*C and 81*C under load of Prime95. Gaming only push it to 60 and such.thinking.gif

Worth noting is I updated my BIOS to the latest version, and on other variant of my laptop series they mounted an i5-2410m which is quite identical with i7 in features, I think. I cannot find my laptop's bios upgrade (its a region specific model so no drivers and support available) so I flashed with other one (quite hard to explain, like, I have a Toshiba L735-1100U but the specific model cannot be found so I flashed it with L735-S3210). No bricks biggrin.gif. Everything seems to be running fine... till now:who-let-r

I have already returned it to the seller in Hong Kong, and he said it could be compatibility issues. He offers me a refund or an exchange. I think I will take my money back. But I still want to upgrade so I intend to buy an used OEM one. But if I go for an OEM, I will not be able to return it anymore mellowsmiley.gif

Please give me advice: Which could be the culprit of the problem? My BIOS compatibility, or the CPU is bad? Should I bite the bullet and try upgrade it again?

My specification: Toshiba L735 motherboard with HM65 chipset, HD 3000 integrated graphics. Other stuffs is 2x4G Corsair memory, a Force GT 120 and an Intel 330 120.

Kindly thanks for your reply wubsmiley.gif
post #2 of 16
I suspect that the processor exceeded the motherboard's power supply, but usually the CPU would downclock itself instead of causing a crash.

EDIT: Huh, according to Intel, both processors have the same TDP. So it can't be a power supply issue.
Edited by A Bad Day - 12/4/12 at 2:09pm
post #3 of 16
Perhaps they have different drivers? I mean... the only thing different between i3, i5, and i7 is hyperthreading, cache size, and turbo boost... the biggest ones anyway.
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post #4 of 16
Processors usually don't have drivers.
post #5 of 16
Quote:
Originally Posted by A Bad Day View Post

Processors usually don't have drivers.

Er... chipset. The only thing else I can think of is a BIOS issue.
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post #6 of 16
Quote:
Originally Posted by skippy722 View Post

Er... chipset. The only thing else I can think of is a BIOS issue.

A 124 is a Vcore or QPI/VTT BSOD, so unless your BIOS allows you to change those things, its basically a hardware incompatibility.

That, or you can try to further void your warranty by see if you can VoltMod a laptop.
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post #7 of 16
Thread Starter 
Thank you all for the replies biggrin.gif
Quote:
Originally Posted by A Bad Day View Post

I suspect that the processor exceeded the motherboard's power supply, but usually the CPU would downclock itself instead of causing a crash.
EDIT: Huh, according to Intel, both processors have the same TDP. So it can't be a power supply issue.
Yep thats what I forgot to mention in the original post. They all have the same TDP. And even if voltage shortage happens, it would be hardly able to "stable" that long, since only PhysX cause BSOD frown.gif Other than that, Virtual Machines, The Sims 3, and all everyday tasks is running fine, by "fine" I mean no crash biggrin.gif
Quote:
Originally Posted by skippy722 View Post

Perhaps they have different drivers? I mean... the only thing different between i3, i5, and i7 is hyperthreading, cache size, and turbo boost... the biggest ones anyway.
My chipset is HM65, which I believe can support this processor. Actually according to Intel it can support some Ivy model too, but dont quote me on that tongue.gif Furthermore I have reinstalled windows just to make sure. No go.
Quote:
Originally Posted by PhilWrir View Post

A 124 is a Vcore or QPI/VTT BSOD, so unless your BIOS allows you to change those things, its basically a hardware incompatibility.
That, or you can try to further void your warranty by see if you can VoltMod a laptop.
My BIOS is very minimal and limited. I dont have any option to modify processor settings other than enable/disable hyperthreading and turbo boost. Since then the processor should be running its default all the time. Too bad that no other model in this family has this processor, so there's no way to confirm "official support". Although there's a model with i5 2410, which features are identical to this i7 2620 except cache size and clock rate.
I have already void my warranty so... xD but voltmod sounds quite complicated and I dont think I can do it tongue.gif

Is there any chance that the processor is defective? I mean, its an ES, which is notorious for instability. I need to be sure which is the cause so I can invest on an OEM unit, since they're unable to return.
Edited by candyroxi - 12/4/12 at 7:09pm
post #8 of 16
there could be a BIOS update for the motherboard to support the processor. It's a long shot though since manufacturers dont really count on people doing that.
 
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post #9 of 16
Quote:
Originally Posted by PhilWrir View Post

A 124 is a Vcore or QPI/VTT BSOD, so unless your BIOS allows you to change those things, its basically a hardware incompatibility.
That, or you can try to further void your warranty by see if you can VoltMod a laptop.

Ahh so that would be the culprit then. biggrin.gif

Good to know. ^_^

Looks like the i5-2450M is the best you can hope to upgrade to.
     
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post #10 of 16
Thread Starter 
Quote:
Originally Posted by Imglidinhere View Post

Ahh so that would be the culprit then. biggrin.gif
Good to know. ^_^
Looks like the i5-2450M is the best you can hope to upgrade to.
Its true that 0x124 can be caused by VTT/QPI, but actually 0x124 is the way Windows tell: "My body is sick and I dont know what or why." Its a generic hardware error message.
http://www.sevenforums.com/crash-lockup-debug-how/35349-stop-0x124-what-means-what-try.html
Thats why I am really curious. Too many reason for this message show up. Too bad Toshiba dont have a live contact agent so the problem would be solved in a blink >.>.

//I dont quite see the point why it will accept i5 2450 but not i7 2620, since they are similar in almost all aspect except clock rating and cache size. Their TDP are the same, and HM65 chipset should be able to deliver them all. The 2410m, on the other hand, is different and identical to i3's since their max graphics frequency is 1.1Ghz, the two we are referring are 1.3 Ghz.
Quote:
Originally Posted by ez12a View Post

there could be a BIOS update for the motherboard to support the processor. It's a long shot though since manufacturers dont really count on people doing that.
Unfortunately I already upgraded me laptop's BIOS to the latest version (Oct, 2012). I doubt newer version will be out soon and even if so it hardly add any more support line.
Edited by candyroxi - 12/5/12 at 8:09am
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