Hp g60 235DX WILL NOT BOOT
Having had unusual faults with batteries in these models from similar issues to having no power at all, the least time consuming test would to be remove the battery and power it only from the AC adapter. If it boots okay, the battery is faulty. Next I'd try to access the BIOS, Keep tapping [F10] key straight after pressing the power button and see if RAM and Hard Drive is recognized. If this fails, there may be a motherboard/RAM issue. Then if there are two RAM modules, take them out and insert each one separately, though remove the power and battery before attempting this procedure so as to not risk damaging the RAM modules, I usually keep at least one finger grounded on the metal regions to avoid a potential difference between my body and the RAM. If it boots with one RAM module and not the other, the issue is obvious. If it doesn't boot with either RAM module into the [F10] BIOS, it is likely the motherboard/CPU has failed. IF RAM is okay and then next would be the Hard Drive: With hard drives, sometimes they can mechanically fail, from overheating and bearing failure. This often presents itself as running fine one day and suddenly fails to fire up the next. You can often hear the drive failing to start spinning, though the CPU cooling fan is often too noisy to hear if the drive is spinning or not. Two techniques are useful, take out the hard drive and very gently spin/shake it back and forth manually in the same plane as the disks would spin, normally, sometimes this can free up a stuck drive, if this does, back up all your data while the drive is running and replace it. If this fails, sometimes we can get a failed drive to run by wrapping in a plastic bag and putting in the freezer for an hour. If this works, get what you can off it quickly and replace it, as the control circuits have been cooked.
Note: On all notebooks, air circulation is poor, they should all be placed on flat surfaces, never laps or soft cloth surfaces like on beds, as these block the fine vents and introduce fluff into the unit.
They should have compressed air forced back into the CPU cooling vents regularly to prevent a buildup of a blanket of dust which cooks the CPU and support chips. Keep the cooling system free and clean to get the best out of your notebooks.