Newegg has several micro atx boards in the $40-50 range that will work, including a zotac NF610i-E-E for $29.99 after rebate with a chipset almost identical to your hp board. Not the greatest, but it should work. You may have to get a new copy of windows, as your old copy may load, but probably won't activate. A format and fresh install may be necessary. As you can see, geniune hp boards even used are too expensive. Your board goes for around $200 on ebay.