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Notebook CPU Throttling

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System Name Spyder
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#1
Hi, my friend here has a Toshiba A300 laptop with:
Core 2 duo T5800 processor
3GB DDR2 RAM
HD 3470
320GB HDD
and recently we found out that it has become very slow. On idle CPU is sometimes about 80% loaded and if we try to load it and play some games, it restarts.
Then I checked Themperatures and it shows about 70°c idle and 85°c after being loaded. And it seems that Temperature sensor stucks at about 85°c, also it sometimes shows -40°c.
CPU-Z shows default (2Ghz) at first, but if we stress CPU, then as themperature rises it lowers frequency accordingly. It's 2Ghz, then 700 Mhz, then 400 Mhz, an if it reaches about 83°c, then it runs on 199 Mhz.

So what should I do, what's wrong with it? Windows Power plan is set to high performance and everything is set to max frequency.
Before it started, we made trip by plane, maybe they played football with this laptop and CPU cooler fell off or something similar? We can open it and try to check thermal compound, but first I want to hear what do you think, thanks in advance!
 

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#2
change the thermal compound, and hoover out the dust - 2 best things you can do to a laptop when the warranty wears off
 
Joined
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Messages
582 (0.22/day)
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Location
Latvia
System Name Spyder
Processor Phenom 2 x4 940 @3.5GHz
Motherboard Asus M3A79-T Deluxe
Cooling CM Hyper 612S
Memory 2x2 GB Patriot Viper + 2x2 GB Kingston Value 800MHz [5-5-5-12] DDR2
Video Card(s) MSI R9 380 Gaming 4G
Storage Crucial M550 256GB+WD Black 1TB + WD Caviar RE 500GB + 2TB Seagate Ext backup
Display(s) BenQ XL2430T
Case Cooler Master Elite 430
Audio Device(s) X-Fi Platinum+custom made HP AMP+Sennheiser HD380
Power Supply Thermaltake Toughpower 850w Modular
Mouse Logitech G502
Keyboard ElE Game1
Software Windows 10 Pro 64-bit
#4
Yes, laptop is hot as hell and stinks as burn't plastic. We haven't opened it yet, but will do that soon, thanks for replies!
 
Last edited:
Joined
Oct 22, 2010
Messages
582 (0.22/day)
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Location
Latvia
System Name Spyder
Processor Phenom 2 x4 940 @3.5GHz
Motherboard Asus M3A79-T Deluxe
Cooling CM Hyper 612S
Memory 2x2 GB Patriot Viper + 2x2 GB Kingston Value 800MHz [5-5-5-12] DDR2
Video Card(s) MSI R9 380 Gaming 4G
Storage Crucial M550 256GB+WD Black 1TB + WD Caviar RE 500GB + 2TB Seagate Ext backup
Display(s) BenQ XL2430T
Case Cooler Master Elite 430
Audio Device(s) X-Fi Platinum+custom made HP AMP+Sennheiser HD380
Power Supply Thermaltake Toughpower 850w Modular
Mouse Logitech G502
Keyboard ElE Game1
Software Windows 10 Pro 64-bit
#5
It's working fine, CPU is cool now. Dust was blocking airflow, see picture. I used the same old thermal compound, but will change it tomorrow when I get new one.
 

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Joined
Jul 2, 2010
Messages
4,012 (1.47/day)
Likes
630
Location
UK
System Name PC
Processor AMD FX 8320E @4.3ghz
Motherboard Asrock 970 extreme3
Cooling Phanteks PH-TC12DX, 3 x NZXT FN 140mm, 1x NZXT FV V2 120mm
Memory 8GB Corsair Vengeance Blue 1600mhz
Video Card(s) ASUS R9 290 DCII-OC 4GB
Storage 128GB Kingston V200 SSD 1TB WD Blue, 750GB Maxtor
Display(s) LG 27MB85Z 27" 1440p
Case NZXT Source 340
Power Supply Thermaltake 675w
Mouse Logitech G500S
Keyboard Logitech G510S
Software Windows 8.1 64 bit
#6
It's working fine, CPU is cool now. Dust was blocking airflow, see picture. I used the same old thermal compound, but will change it tomorrow when I get new one.
bad thing to do unless it was liquid when you put the cpu on, otherwise it won't form a good bond, see if you can fit a dust filter in there or something if the problems that bad
 
Joined
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Messages
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Location
Latvia
System Name Spyder
Processor Phenom 2 x4 940 @3.5GHz
Motherboard Asus M3A79-T Deluxe
Cooling CM Hyper 612S
Memory 2x2 GB Patriot Viper + 2x2 GB Kingston Value 800MHz [5-5-5-12] DDR2
Video Card(s) MSI R9 380 Gaming 4G
Storage Crucial M550 256GB+WD Black 1TB + WD Caviar RE 500GB + 2TB Seagate Ext backup
Display(s) BenQ XL2430T
Case Cooler Master Elite 430
Audio Device(s) X-Fi Platinum+custom made HP AMP+Sennheiser HD380
Power Supply Thermaltake Toughpower 850w Modular
Mouse Logitech G502
Keyboard ElE Game1
Software Windows 10 Pro 64-bit
#7
I heated it over owen to get it melted and in liquid form. I know it's bad, but it's night now and I'm in foreign city, and we all know that I'm addicted to PC :)
 
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#8
I have an HP dv7 laptop (specs under username) which was overheating any time the GPU was used for anything significant, eventually shutting down on its own. Also, it started doing this after only about a year of ownership. I didn't open mine though, I just blew out the fan & exposed heatsink with compressed air, which fixed it! I think I've blown it out one time since, as precaution.