Windows startup problem

OK YOU NEED TO FIND OUT YOUR BIOS type (manufacturer and version)
You mght find it by asking Acer support (you could also ask what the six beeps means straight off).
Then go here
http://www.bioscentral.com/
and see if can the beep code list for your BIOS.
(one notice board post I read read for the G3620 model explained that mean the keyboard IC was defective; I don't know wheyther it is possible to replace this I any case)

21.december.2014

Back up all data and re-image the computer. You can either use a windows 7 disk or create a bootable usb. there is likly a problem with the boot manager.

Try restoring the BIOS defaults

You should have get two cords, if you bought the monitor and the cpu, if you just only bought the cpu then you must buy a new cord .
Here you can buy it. POWER CORD

explain in more detail what the problem is. Also say what windows version you have

please translate it in english. i can't understand.

depending on ur virus scanner, it could be searching for viruses during start up

My clarification Request was supposed to be a solution, I clicked the wrong place.

win xp

you should try to remove unnecessary files in your hard drive.. afterwards, try to run the disk defragmenter. this tool will help you computer to access files faster thus making your computer load up faster..