Laptop goes out? COMPAQ?

My laptop of CompaQ with broken battery (works only on the power) goes out every 2 minutes (screen sxhwarz and goes down), what can I do?

Buy new battery

Does this happen with power supply and without battery (removed)?

Oh god, that's it, thanks

Well, great, a defective battery must always be removed.

You can now operate the laptop permanently only with AC adapter or buy a new battery. Tip: there are almost for each laptop cheap batteries from third-party manufacturers.