Oh what has happened to Dell.  I used to swear by them... I used to work for them in outbound tech support, they were going downhill then and apparently the decent has not slowed.  I've got a Venue 11 pro 5130 that no longer charges unless you press the micro-usb connector in and hold it.  Same thing happened to mine a year ago and fixed under warranty, now my wifes has gone and no warranty.  Dell's solution - replace the entire motherboard.  It's a tiny daughter card on a ribbon cable with 2 screws (admitadely after popping of the middle bezel which isn't hard but not a beginner move).  I can buy the part "refurbished" online for $40 but Dell refuses to fix it reasonably or send me the part even if I pay for it.  So I guess my advice is Don't buy a Dell, and if you do, buy enough extended warranty to cover the entire life of the product for years, because as soon as your warranty is up - they won't even send you parts.