Windows 10: What does 7 beeps mean in a Lenovo laptop?

Last month my laptop's display doesn't turn on and it makes beeping sounds 7 beeps to be exact. I placed my laptop on a flat surface and weirdly when place it in my legs it starts to work. I decided to use a laptop stand now. Any ideas what caused the beeping?

:)

 

Beep, beep . . . Beep

That series of beeps is a POST error code, most likely the computer is telling you what is wrong with it. You need to go to the packard bell website or contact their tech support and find out what they mean. It will narrow down the list of problems.

 

Laptop slows down and beeps.

Sometimes my laptop randomly slows down and beeps. It is always a random amount of beeps. I have checked for viruses and nothing happens. I have tried Microsoft support but have not gotten anything that helps me. I have a Lenovo Thinkpad T430s.

 

laptop random beeps

Hi

I have an asus g551vw laptop which i bought a month a ago. from the first day i heard a random beep. beep sound is generated at random times and it doesn't matter what i'm doing. but when laptop is idle its less likely to here this beep. the beep sometimes
has low pitch sometimes high pitch sometimes long and sometimes short. i took my laptop to repair and i told them about that but they couldn't fix it because it passes all tests and also you must work with it for like 1 hour to hear the sound since there is
no certain time for the beep.

please help me i'm going crazy.

also i have another issue i don't know its windows related or what. its a bit laggy working with chrome. i mean dropdowns are lagging, google images is lagging. i mean for example dropdown should drop smoothly but its lagging.

thanks