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HP Pavilion Gaming - 15-ec0002nc
Microsoft Windows 11

Hi, recently i used virtualbox on my HP laptop where i was trying one OS, it was kinda glitchy so i saved it's state and put my laptop in sleep. At the morning when i turned on my laptop and restored that vb machine state, my laptop was suddenly very laggy and unstable, so i checked my ram usage and found there are only 3,37GB of ram available out of 12GB which i have physically installed. After second restart laptop refused to boot to windows and every time that windows loading wheel appeared it stucked and won't do anything. I need to reset bios settings every time i want to boot to OS or to install media, otherwise it won't boot. I managed to try replacing ram modules but every time i install any ram to bottom left slot, capslock led will blink 5 times slowly and 3 times fast, if i leave that slot empty it will normally boot, but system is still kinda laggy including graphical and sound glitches. I'm sorry for this long text, but i'm kinda out of ideas what can be wrong with it. Thanks for any help:D

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