Problem after Notebook upgrade

Hello! I recently upgraded my C700 from t2310 to t7500 and changed cmos battery (new battery with soldered cables to Steel plates on battery) and i have following problem: First boot was fine, fan was running nearly constantly at full speed, but still displayed t2310 cpu in properties and just shut off. Every try makes it turn on for like 5-10 seconds and it shuts off, once it went past this and updated Windows 10, but after That resetted, always when it turns on past Windows loading it pops BSOD. What can I do? The second problem is when booting bios and system booting screen are made 100% from black and white stripes, yet after Windows loading, login screen and system overall runs fine, without stripes and after restart, bios is fine too, what's causing That?
Cheers!
To be precise, the newest bios is flashed and it has 2.5gb of ram (0,5gb closer to mobo because over 1gb there makes it unstable, worked fine before)
Update: It booted and even kept bios data, hours etc for some time and maybe one power off (no battery, cord unplugged) booted to OS but custom dock Didn't open and in system info it stated in nearly Every info (processor, memory etc) as unavailable, can it be because of cmos battery or some capacitor damage? Or can it be CPU fault?

 

Did you ever try this without being on Windows 10? Win 10 is known on these forums to screw with peoples' systems and motherboards.

 

Since with no battery it ran then the CPU at that stage is running the idle speed. More than likely your system can handle those power requirements. When you boot with AC then it wants to run full speed. Either your brick just can't handle it or the caps on the main board. The other issue too can be timing if the bios will not recognize the proper CPU.

Another clue is the ram, you system seem unable to power it properly. Again this could be the brick or the system internal capacitors. If you have a higher amp brick to try then that may at least be a low cost troubleshoot.

 

Cpu as far as I know has the same power hunger as the Old one, it don't only happen on w10, it's turning off by itself even in bios and Cpu is recognized in bios, this CPU is kinda common upgrade in these notebooks so it can handle it stock

 

it is not the same, having the TDP being the same rating is just not the same as power draw. On that note though you could have a heat issue too.

 

It has only voltage range higher by 0,07, Typical power consumption is the same, and People who upgraded to t7500 say it makes even less heat than T2310, so maybe capacitor?

 

Again try the power brick first. Get one with the same voltage but higher amps, at least 25% but preferably 50% more. Generating less heat is not an indicator of drawing less power either, that is CPU's not of the same model.

 

Okay, but now i disassembled it, checked Connectors, heatsink and heatsink compound, capacitors are fine, now it's running w/o screen on external screen and it's running just fine and quiet, maybe something was making short circuit, hardware is recognized even in Windows, no BSOD whatsoever

 

The internal screen could be the amount of extra power draw that is causing your issues as well. Then again it could be heat buildup etc.. but if you assemble it fully and there is an issue get a better brick to try.

 

CPU problem seems to be magically fixed, but now the bigger problem is the screen, which just project stripes, although when it's transitioning to OS it blinks just as it does normally, it normally projected stripes in bios and os loading, os was running fine

 

Connected internal screen and it works fine with it too, just screen isn't displaying properly as it did earlier in bios

 

Probably needs a driver update then. If BIOS is fine and Windows is not, that's drivers.

 

Okay, everything seems to be properly working now, disassembly and assembly works Wonders ^^

It's actually opposite :v It goes weird in Bios and good in Windows. And it can happen in Windows too

 

The world thing is that I just screwed last Screw in and the screen decided not to cooperate again, this is really frustrating, because just 10 minutes ago I was gaming on it to test if everything works
Edit: Dunno Why, when I plug external screen in and restart system through Windows, screen works normally, even in Bios
Next issue: I think there is something with the temperature sensor, because HWTEMP shows 50, max 60 celcius idle, 80-90 celcius and the fan can run really fast, but CPU really isn't heating up that much, case is colder than it was on older CPU while temps and fan speed is higher, Any solutions?

 

WHAT THE MEOWMIX WITH YOUR LAPTOP O_O

 

I think it's possessed XD We'll see tomorrow how it boots up, I can see improvement with the new CPU, but temps and fan speed really bugs me, because case can be only a little little warm, while fan goes crazy and HWTEMP shows 80-90 degrees, something heatsink involved?
Update: Got display problem figured out, video cable nearly hinge is damaged T.T
I will recheck cpu and heatsink for temp readings problem while new video cable is shipped