Whenever I go to power up my HP pavillion entertainment dv6700 laptop, it starts to turn on and then turns off a second later, turns back on, off, etc. I've tried a hard reset and cleaning it out, but no luck. I also read to remove the motherboard battery for a half hour and that didn't work either. The power lights do come on and I hear the fan, but there is no beeping or light sequences and I cannot access bios. pressing the "esc" button prevents it from turning off but it still just remains a black screen and pressing buttons doesn't do anything more. From other sources I've looked at, they say I need to replace my motherboard. I am just wondering if there is anything else I can check before going through with replacing it?
Also, I can save myself hundreds of dollars if I replace the motherboard myself. Would you suggest doing this or just go to a service and fork out the cash?