I recently installed Windows 10 64 bit and my PC was working properly till yesterday. Today when I tried to turn it on by pressing the power button, it starts for few seconds and stops and then again it starts and stops and it keeps repeating itself until I turn off the main power supply. Please help!!!
Too little information to guess something. Remove all accessories and attachments, unplug the power cord, and in the case if it is a laptop or similar, remove the battery for at least one minute. Then place the battery and power cord and try restarting. If nothing has changed, try in safe mode - for Windows 10, when the firm or boot logo appears on the screen, turn off the computer three times in a row, then the Boot Options will open on the fourth boot. I forgot, you might want to check all connections, including removing and placing back again the hard drive, and the same for all other plug-in connections. If this does not work, we can move on to other options.
Tr I tried everything you said. Removed all the connections and put it back. Removed CMOS battery and RAM and put it back. Still the problem persist. The processer fan and the PSU fan starts for 2 to 3 seconds after pressing the power button and then stops and again starts for few seconds and stops ,and this keeps on going. The led light of the DVD drive and mouse blinks when the fans starts and stops when the fan stops. And it doesn't even shows anything on the monitor
If so, there may be a problem with the power supply or BIOS settings. Remove the hard drive (or all hard drives if there are more than 1) and try booting again. If all is the same, try going to the BIOS settings and if successful, look for "Restore Defaults" and restore them and restart computer. If nothing still changes, might think the problem is with the power supply or the motherboard. If possible, try another power supply. If even then nothing changes, would think, that something wrong with motherboard.
Thanks for helping I removed hard drive and turned it on but unfortunately the problem is same. So I am going to replace my PSU and hope that it will solve the problem.
You'll have to try really, it's hard to guess what else could have happened. Maybe someone has an idea. I can't think of anything more.
Another thing that can cause this kind of problem is a faulty power button. If you are changing the PSU make sure to check first if the power button is bad.
bad power supply , replace thermal past in cpu and graphic cards ( for laptop or desktop , replace thermal past every 5 years are the best ways to keep computer life
The thermal paste only needs to be replaced if you have damaged it yourself, ie you have disconnected the mechanical connections between the processor / graphics card, etc. and the thermal conductors that secure it. In no any other case is a new thermal paste ever needed. Not even if your computer is hundred years old not needed to replace.
sorry but your have false informations , on a computer like desktop don't change thermal past reduce life , sincerly computer technician.
If you want, change this thermal paste every day - just like you change underwear. But I don't have any data at all. So the data can't be wrong either. And really, I've been an electronicsian for 40+ years. So I don't have to read any strange cowboys recommendations anywhere, it's been a daily thing for me for almost half a century. Thanks for such great suggestions, but still try to educate yourself, not comment on other people what they should do and how stupid they all are. It would be advisable to stick to the topic and not to comment on other members. This is not the first time you have commented on other members, of whom you are actually know at all nothing. Stop once.
I don't criticize I just give my opinions, I also have work colleagues who are 50 years old and I, the youngster, I find the solution when others have found nothing the goal is mutual help , not life lessons
I have been using the same thermal paste for 10+ years. Maybe because I also have a liquid cooled system. But my computer has never showed adverse performance even being clocked to 5.2. Which is good when it's a AMD 8350.
Heat is what kills the thermal paste. With a laptop it just dies sooner due to the inability to provide enough air to cool. My desktop is as I stated is liquid cooled all the cpu, memory and video cards. when my system is running at all 8 cores and working autocad. My system don't get above 140f. Therefore my thermal paste does not break down and remember the cpu is clocked 1.2g over stock.
had a desktop with i7-4790k do same.. tried cpu in my good system and same on off symptom as in othe other computer... sometimes even cpu can short and do that.
Disconnect the power and the parts again, video card too if it has one, take out cmos battery, after a few minutes press and hold the power button for about 50 seconds, leave it like that overnight, and try reconnecting everything and powering on the next day. I've had this happen, the lingering power in motherboard or psu micro transistors prevented the problem from clearing.