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OverheatingWhen the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are cloggedwith dust. Check the CPU fan to see if it spins freely, if not replace the fan. If the fan and heat sink is clogged with dust the remove the dust and make surethe vents are clear and dust free. Use a small brush and can of compressed airto do this.
this problem is related with your heat sink of your processor so u must de assemble your laptop and clean the heat sink may be there will more dust. after clean heat sink you must put thermal paste in the top of your processor after you can re assemble. it will be work other wise contact me here..
probably itz either minor case of software corruption/improper ground/cpu fan.. or major case of faulty or defective main board/ram/addon/daughter cards..
..plz do check the following as in order:.. the Hardware part:.. 1)a)
in power-on mode, open/unplug the data/vga cable of the monitor from
cabinet..see if raster or 'osd' is appearing on the monitor screen..if
so monitor is ok..else replace the monitor and see..[not applicable in
case of laptop].. b) in case of laptop try to get output from
external display unit/monitor using vga port..if there's proper display
in there..the problem is probably with either the 'lcd' or 'ccfl' or
2) if u hv a graphics card, replace with a standby or onboard and see..[not applicable in case of laptop]..
3) unplug mains supply..pick open/remove the cmos battery..check (above +3v)..resit..
see if the ram(s) is loose/faulty..open clean/remove carbon &
or oxide formed on the teeth with an eraser n resit it..or replace with
a standby n see..
5) a) see if ur hdd is noisy or emitting any 'ticking' noise (like 'tuk tuk' or 'kirr kirr').. b) or if the system is not supporting either the newly installed device or itz software/driver /firmware if so, u need either a fresh os installation or ur hdd is likely to b replaced..
6) remove/clean dust
neatly..dust is non-uniform in nature n may cause
jam/short circuitry/excess resistance n many more..resulting an increase
7) open the CPU Heat-Sink with fan out of the
socket..put some "Heat Sink Compound" (available in local electronics
chip level spare market)between the cpu/processor and the CPU Heat Sink
*** fan..resit/fit it tightly in position..
8) on main/mother
board..see with a debug card for mb error..may b short..look for
defective capacitors(espabove1000mfd)/mosfets..go through the mb's
south bridge n the circuit lie around atx connector..the crystal clock
generator (if cpu isn't heating up)..
9) [in case of desktop] the
smps itself may b defective/faulty..check the outputs of smps viz. 0v
(black~ground); +12v(yellow); +5v (red, green~ps-on, violet~pg&
grey~sb); -12v (blue);-5v(white); +3.3v(orange)..the 'oscillator and
error amplifier ic',or pwm switching regulator circuit..look
for defective protector-transformer/resistance (esp 4.7k)/mosfet.. check the battery n adapter [main power], in case of laptops.. for
any further assistance u may plz leave comment and or testimonials at
any point of time, so that i/we can help or u think it to b helpful..
if u r not a professional, always better to seek advise from ur system admin/vendor....
Hello, The CMOS battery supplies energy to the Real Time Clock when the computer is not connected to the electrical socket, and does not have the battery inserted. It should not prevent the computer from starting up. You will however be asked to reset the time and date of the computer. Hope it helps.
Try doing a manual system reset. To do this:
1. Remove battery and unplug AC adapter.
2. Press and HOLD power ON button for 30secs. at least
3. Put back the battery and plug back the AC adapter
4. Power ON the laptop as normal.