SAS or Malwarebytes . Which is best for 'realtime'

I have XP,SP2,32bit.

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If this is correct and you didn't make a typo, you have an extremely outdated and unsecure version of Windows XP.

The SP3 upgrade was released in May 2008.

There were over 100 post-SP3 security-related updates released between June 2008 and April 2014.

If Windows XP in your computer is that outdated, your first priority should be to get it up-to-date.

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I am retired, so all programmes so far have been 'Free' they are,
Avast/ Spy Shelter/ Private Firewall/ Ad Block Plus. The 2 offline scanners are MBAM and SAS.

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If Avast is the full-time running antivirus program in your computer, the free version of Malwarebytes Anti-Malware and SUPERAntiSpyware will do fine.

Start them about once a week, then update their definition files, then do a threat/quick scan with each one, then select and remove everything they find.

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You didn't submit any specs on your computer, so we don't know what type/speed processor it has and how much RAM it has.

If you over-burden it with security-related programs, it may bog down or run like a turtle.

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From an initial search on your system, and then going further I saw that more than a few were able to install Windows 7 on that very system with no issue after a complete / wipe format of the hard drive, and it ran fine, which means Windows 7 picks up the drivers in a default state just fine. With that said if there was any way possible for you to acquire and OEM copy (or an upgrade copy) of windows 7 that would be the best security by far you could possible have as the above reply has stated. Not only will you have an updated operating system, but you will have an operating system with security updates from Microsoft, and built in protection from windows defender, and a much better windows firewall. Moreover, if you get an "upgrade copy" it's a bit cheaper and you can install it right on top of windows XP so all your files that you have now will still be there. I prefer a "clean"' install of Windows but in this case and in many practical cases there is nothing wrong with an "in-place" (windows 7 on top of windows xp) installation.

Sanclu said:

I live in Spain

The label on the back of the PC states: Presario SR 1000 Product SR 1865 ES
System number RB105AA

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Here is the support site for the Compaq Presario SR1865ES (RB105AA) desktop.

According to its product specifications section, it was introduced in May 2006 and sold in Spain and came with Windows XP Home Edition SP2.

It came with this hardware:

Intel Pentium D 930 dual core 3.00 GHz processor

1 GB of DDR2 RAM (supports up to 2 GB of RAM)

200 GB SATA hard drive

DVD+/-RW optical drive

ATI RC410 chipset

NVIDIA GeForce 7300 LE graphics

Realtek ALC883 high definition audio

Realtek RTL8100 10/100 Mbps fast ethernet

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I have to agree with Blu_86.

If it's maxed out with 2 GB of RAM, that desktop is capable of running Windows 7 Home Premium 32-bit.

Windows XP can't be upgraded straight to Windows 7, so you would need to do a "clean" install - which is the best way anyway so you can start out fresh.

Just make sure to back up your personal data (documents, photos, etc.) to reliable external media before you start.

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