ACER ASPIRE 5749 CORE i3 BRAND NEW SWAP FOR HIGH SPEC DESKTOP ?

only had this a few weeks only been used a handful of times im to used to my old one so litraly brand new, box included, cant take it back as its exempt from 30 day money back and also it was bought on my aunts argos card, looking for a swap for a high quality pc, must be wirless so i dont need to connect with wire and also must have hdmi out so it can be pluged into my tv, if ur pc isnt worth 350 cash to make the diffrence will be needed , MAY SWAP FOR WHAT HAVE U? COST 400. Acer 5749 Core i3 Laptop. CPU and Memory: Intel Core i3 dual core 2330 processor. 2.2GHz processor speed. 4GB DDR3 RAM memory. 750GB SATA hard drive. Display features: 15.6 inch widescreen display. High definition display. Resolution 1366 x 768 pixels. DVD optical drives: DVD+RW/DVD-RW(read/write). Dual layer. Graphics: Shared graphics. Intel HD Graphics 3000. Interfaces and connectivity: 2-in-1 media card reader. Secure Digital (SD), Memory Stick Pro (MS-Pro), xD, Multi-Media Card (MMC) compatible. 3 USB ports. 1 Ethernet port. 1 HDMI port. Multi-media features: 0.3MP Acer Crystal built-in webcam. Built-in mic. Dolby sound system. Operating system and software: Microsoft Windows 7 Premium. Software included: Microsoft Home Office and Student (trial Version). Anti-virus and security (trial version). Adobe Reader. Preloaded manufacturers suite of applications include: General features: Up to 4.5 hours battery life. Size H3.32, W38.16, D25.3cm. Weight 2.6kg