COMPUTER VIRUS ATTACK

I need urgent help!
The title says it all. After Microsoft Security Essentials has stopped working from XP being discontinued i've been bombarded with these viruses all on one day.
Trojan: WinNT/Necurs.A
Trojan: Win32/Necurs.gen! A
Trojan: WinNT/Necurs.A
Trojan: WinNT/Necurs.A
Trojan: WinNT/Necurs.A
TrojanDropper.Win32/Bunitu.C
TrojanDropper.Win32/Bunitu.C
Exploit: Java/Obfuscator.J

I'm freaking out. My mum says we don't need a new protection system, and that I go on the virus sites. She won't let me get new protection on my PC. I only do documents on here and play Warriorcatsrpg and Minecraft.

But, here is the bad thing, right after I delete them, my computer gets a response saying "Windows must now restart because the DCOM service processor has stopped working."
But, when It restarts, it downloads the viruses again, and adds in new copy's of them!

Guest

You can try to download malwarebytes from malwarebytes.org then install it on your desk top and see if you can run that… If not try to start your computer in safe mode and run it from there ok? This is a free program and will not cost you anything.

Clay

You'll have to download and install the free AVG and delete the icons from the desktop and start menu. Then scan the disks each time you use it, running the Avg from the Programs folder or wherever it is.

David

If you know name of the virus do the following:
open run&type regedit.exe
press ctrl+f type the virus name delete the file

karthikeyan

Try the following:
1. Delete java cache:
http://www.java.com/..._cache.xml
2. Update java
3. Run free malwarebytes:
https://www.malwarebytes.org/

are you clean now?

Do you have a virus? No, malware
Does Microsoft Security Essentials work well on XP? No.
Is XP no longer support? That right no longer supported.
Exploit: Java/Obfuscator.J - first rule with java exploits? Delete the cache
can a trojan come back? Yes if in system restore, turning off system restore cleans system restore, turn back on when clean.
Would I remove Microsoft Security Essentials? Yes, then download a free antivirus program that does work
Is Mum right? No.

Sly_Old_Mole