Where is the computer stuck?computer screen

Aug 20, 2018
I bought a computer two years ago, but lately, the machine is stuck after a while, but the programs are not backdated, but only the main screen is not able to run another program. In addition to the ones that have been turned on, you often have to keep the startup button off, when you reboot it will not be like that anymore, but if you turn off the computer and the next time it is like that, At win error or by the virus, the machine used to win 10 times, e-games and anti-virus software also reported that there are many viruses from which the machine is so eager to answer everyone e. And is there a way to fix it?